api 5l astm a52 welded steel pipe 1.Size:1/2"-48" 2.Wall Thickness ... A52/A53/A106,API 5L api 5l astm a52 welded steel pipe Size1/2"-48"(DN15-DN1200)Wall Thickness1.5- ... 40mm, SCH10-SCH160,STD,XS,XXSLength5-12mMaterialcarbon steel,stainless steel,alloy steel,StandardASTM A53/A106,API 5L,GB/T3091,JISApplications ... requirement PortTianjin Xingang seaport,China. api 5l astm a52 welded steel pipe